System for controlling the ignition timing of an internal combus

Details System for controlling the ignition timing of an internal combus System for controlling the ignition timing of an internal combus

1985-12-26

1987-12-29

Cox, Ronald B.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123435, F02P 504

Patent

active

047153423

ABSTRACT:
A first maximum ignition timing table storing a plurality of degrees of ignition timing each producing a maximum engine torque dependent on engine speed with low-octane gasoline without occurring the knock, and a second maximum ignition timing table storing a plurality of degrees of ignition timing each producing a maximum engine torque dependent on engine speed with high-octane gasoline without occurring the knock are provided. A first ignition timing and a second ignition timing are provided from the first and second maximum ignition timing tables in accordance with engine speed, and a correcting quantity having a value within the difference between the first and second ignition timings is obtained. An ignition timing is obtained by using the correcting quantity.

REFERENCES:
patent: 4245602 (1981-01-01), Omori
patent: 4351281 (1982-09-01), Geiger
patent: 4510910 (1985-04-01), Ninomiya
patent: 4558674 (1985-12-01), Okado

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